linux-kernel - [PATCH 13/17] gpio: max732x: Convert to immutable irq

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Message-Id: <20230215-immutable-chips-v1-13-51a8f224a5d0@linaro.org>
Date:   Thu, 16 Feb 2023 10:37:14 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Mun Yew Tham <mun.yew.tham@...el.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, Alban Bedel <albeu@...e.fr>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Jay Fang <f.fangjian@...wei.com>,
        Daniel Palmer <daniel@...ngy.jp>,
        Romain Perier <romain.perier@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        William Breathitt Gray <william.gray@...aro.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-omap@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Marc Zyngier <maz@...nel.org>
Subject: [PATCH 13/17] gpio: max732x: Convert to immutable irq_chip

Convert the driver to immutable irq-chip with a bit of
intuition.

Cc: Marc Zyngier <maz@...nel.org>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/gpio/gpio-max732x.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index 68e982cdee73..7f2fde191755 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -351,6 +351,7 @@ static void max732x_irq_mask(struct irq_data *d)
 	struct max732x_chip *chip = gpiochip_get_data(gc);
 
 	chip->irq_mask_cur &= ~(1 << d->hwirq);
+	gpiochip_disable_irq(gc, irqd_to_hwirq(d));
 }
 
 static void max732x_irq_unmask(struct irq_data *d)
@@ -358,6 +359,7 @@ static void max732x_irq_unmask(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct max732x_chip *chip = gpiochip_get_data(gc);
 
+	gpiochip_enable_irq(gc, irqd_to_hwirq(d));
 	chip->irq_mask_cur |= 1 << d->hwirq;
 }
 
@@ -429,7 +431,7 @@ static int max732x_irq_set_wake(struct irq_data *data, unsigned int on)
 	return 0;
 }
 
-static struct irq_chip max732x_irq_chip = {
+static const struct irq_chip max732x_irq_chip = {
 	.name			= "max732x",
 	.irq_mask		= max732x_irq_mask,
 	.irq_unmask		= max732x_irq_unmask,
@@ -437,6 +439,8 @@ static struct irq_chip max732x_irq_chip = {
 	.irq_bus_sync_unlock	= max732x_irq_bus_sync_unlock,
 	.irq_set_type		= max732x_irq_set_type,
 	.irq_set_wake		= max732x_irq_set_wake,
+	.flags			= IRQCHIP_IMMUTABLE,
+	 GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
 
 static uint8_t max732x_irq_pending(struct max732x_chip *chip)
@@ -517,7 +521,7 @@ static int max732x_irq_setup(struct max732x_chip *chip,
 		}
 
 		girq = &chip->gpio_chip.irq;
-		girq->chip = &max732x_irq_chip;
+		gpio_irq_chip_set_chip(girq, &max732x_irq_chip);
 		/* This will let us handle the parent IRQ in the driver */
 		girq->parent_handler = NULL;
 		girq->num_parents = 0;

-- 
2.34.1